Harbeth Radial Driver - How Good?

I had the opportunity to audition both the Harbeth Compact 7-ES3 speaker and the Harbeth Super HL5 speaker.

Both of these speakers were being powered by a tube integrated amp.

I was very impressed by both speakers and was told by the dealer that their excellent performance is due to their proprietary Radial mid/bass driver.

Any idea if these would work well with a Linn solid state 200W per channel power amp (Akurate 4200)?

Also, would these be a good fit for my 12 feet x 14 feet living room?

Last, what was your experience with these Harbeth speakers?